Parts | Days | Selection | Search | Updates | Downloads | Help

MM: Fachverband Metall- und Materialphysik

MM 34: Poster Session

MM 34.32: Poster

Tuesday, April 1, 2014, 18:00–20:00, P4

Calculations of Thermal Conductivity across an Interface using Beam Matching — Debanjan Basu¹, •Cynthia Volkert², Christian Jooss², and Peter Bloechl¹ — ¹Institute for Theoretical Physics, Clausthal University of Technology — ²Institute for Material Physics, University of Goettingen

Thermal conductivity is an important factor affecting the efficiency of thermoelectric devices. Our goal is to explore the thermal transmission due to phonons in multilayered structures on a mode-by-mode basis using the Beam Matching Technique. For this purpose, we determine the ``complex bandstructure'', which describes propagating as well as evanescent phonon modes of the individual materials of this multilayer.We describe how to extract the matching conditions from the classical equations of motion for the atoms.